Stop mechanism for phonographs.



PATENTED APR. 9, 1907.

C. OTZEN. STOP MECHANISM FOR PHONOGRAPHS.-

APPLICATION FILED 13130.27. 1904 \NITNESSES INVENTOR 1n: nonms PETERS cm. wAsnmcron. n. c.

- UNITED STATES CHARLES OTZEN, OF SCHENEOTADY, NEW YORK.

STOP MECHANISM FOR PHONOGRAPHS.

Specification of Letters Patent Patented April 9, 1907.

Application filed December 27 1904. Serial No. 238,277.

To (Li/l whom it may concern.-

' Be it known that I, CHARLES OTZEN, a subject of the King of Denmark, residing at Schenectady, county of" Schenectady, State of New York, have invented certain new and useful Improvements in Stop Mechanism for Phonographs, of which the following is a specification.

My invention relates to an automatic stop mechanism for phonographs whereby the motor is brought to a state of rest at a predetermined point of travel of the reproducer.

By the use of my stop mechanism the relative movement between the reproducer and record may be arrested automatically and Without thought upon the part of the operator before the end of the record is reached, thereby preventing unnecessary unwinding of the motor-spring and the reproducer from riding oif of the record onto the cylinderdrum and causing injury to the stylus of the re roducer.

eferring to the accompanying drawings, which form a part of this specification, Figure 1 is a perspective view of a phonograph to which is attached an automatic stop mechanism. "Fig. 2 is a plan view of the stop mechanism; Fig. 3 is a rear elevation of the same, and Fig. 4 is a partial rear detail of the stopmechanism carrier or support, showing t e shouldered slot which receives the startinglever button.

Referring to the drawings, 1 represents a phonograph of any well-known construction, having a stop mechanism 2, which is secured to the phonograph at 3 and adapted to automatically move the motor-starting lever 4 to its stop position at any perdetermined point of travel of the reproducer.

The stop mechanism comprises a carrier or support 5, one end of which is turned back upon itself to form a U-shaped clamping portion 6, arranged to be clamped to the phonograph-frame by means of screws. Pivotally mounted on the carrier 5 is a lever 7. This lever is secured to the carrier by means of a thumb-nut 8 and is adjustable in a horizontal direction thereon, due to the fact that its pivot-screw 9 is slidable in the slot 10 of the carrier 5. Formed integral with the lever 7 is an abutment or indicator 1 1, which may be set to any position with respect to the cylinder or record where it is desired to stop the operation of the phonograph, and for this purpose it extends toward the cylinder to a point where it is adapted to be struck by-the reproducer-frame 12 and thereby raise the free end of the lever and actuate the mechanism. An actuator 13 for the starting-lever is mounted in the shouldered slot 14, the same being preferably a pin provided with two collars 15 for preventing lateral movement thereof in the slot. Connected to the actuator 13 is a retractile spring 16, whose other end is secured to the carrier. This spring is used for moving the motor-starting lever 4 to its stop position through the actuator 13, which latter is moved out of engagement with the shoulder of the slot 14 when the reproducer-frame 12 strikes the abutment 11 and rocks the adjustable lever on its pivot. It is to be noticed that a slot 17 is cut in lever 7 to allow for horizontal adjustment between the lever 7 and carrier 5, whereby the abutment 11 is maintained in proper relation to the reproducer-frame.

The operation of my automatic stop mechanism is as follows: Assuming that the abutment or indicator is set at the end of the indentations on the cyiizxder or record, the lever 4 is moved to the left to start up the motor of the phonograph. This operation also moves the actuator 13 to the left against the tension of the spring 16, which movement causes the actuator to drop into the shouldered portion of slot 14. The actuator is held in this position, with the spring 16 under tension, until the reproducer-frame, which is now moving to the right, strikes the abutment 11 of lever 7, thereby rocking it on its pivot-screw 9 and raising the actuator out Of engagement with the shoulder of slot 14.

Thus released, the spring 16 draws the actuator l3 and lever 4 to the right, stopping the phonograph-motor and arresting further rotation thereof.

In accordance with the provisions of the patent statutes I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but

I desire to have it understood that the apparatus shown is only illustrative and that the invention can be carried out by equivalent means.

What I claim as new, and desire to secure by Letters Patent ofthe United States, is

1. In a device the character described, the combination of a phonograph, a motor mechanism, a lever for starting and stopping said mechanism, an actuator adapted to beafiagainst one side of the lever, and means prising a carrier or sup 35 controlled by said motor mechanism for moving saidactuator against said lever tomove it into a stop fposition.

2. In a device 0 the character described, a phonograph and a starting-lever therefor, in combination with an adjustable stop mechanism which is set by the movement of the lever when starting the phonograph into operation.

3. In a device of the character described, a phonograph and a starting-lever therefor, in combination with a stop mechanism comprising a carrier or support, an adjustable pivoted lever, means for adjusting the lever, an actuator in working relation with the starting lever mounted in the carrier, .a s ring for actuating the actuator to move the starting-lever to its stop position, and means secured to the ivoted lever in the path of the reproducerame to be actuated thereby for tripping the lever to release the actuator.

4. In a device of the character described, the combination of a phonograph, a reproducer, a motor mechanism, a lever for starting and stopping said mechanism, an actuator adapted to bear against one side of the lever, and means controlled by said repro ducer for moving the actuator against the lever to move said lever into its stop position.

5. In a device of the character described, a phonograph and a starting-lever therefor, in combination with a stop mechanism comort having a slot therein which is provide with a shoulder, a pivoted lever on the carrier, means for tripping the lever by movement of the reproducer-frame, means in said slot for actuating the starting-lever which is adapted to engage with said shoulder and is released from the latter by movement of the lever, and a spring for actuating said means when the latter is released.

6. In a device of the character described, a phonograph and a startingdever therefor, in combination with a stop mechanism comprising a carrier or support having a slot for the actuator which is provided with a shoulder for holding the latter in a set position, a pivoted lever therefor, an abutment on the lever, an actuator which 0 crates the starting-lever, a s ring secure to the actuator and carrier w 'ch is under tension when the actuator is in a set position, and a means for disengaging the actuator from the shoulder of the slot for actuating the startinglever and thereby stopping further rotation of the phonograph-cylinder.

7. In a device of the character described, a phonograph and a starting-lever therefor, in combination with a stop mechanism comprising a carrier or support, an adjustable pivoted lever, means for adjusting the lever, an abutment or indicator 011 the lever, an actuator in working relation with the starting-lever mounted in the carrier, a spring for actuating the actuator to move the start-- ing-lever to its stop position, and means secured to the pivoted lever in the path of the reproducer-frame to be actuated therebyfor tripping the lever to release the actuator.

In witness whereof I have hereunto set my hand this 23d day of December, 1904.

CHARLES OTZEN.

Witnesses:

EDWARD WILLIAMS, Jr., GEORGE A. THORNTON. 

